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From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Sun, 12 Aug 2018 23:40:59 -0700
Message-ID: <CAHmME9oUWgtyBHK9WRT7oKe0Ud5ooTmGuOnkyMPRWpMBFGxV4Q@mail.gmail.com>
Subject: Re: Fragmentation on UDP layer possible?
To: coder@poorlab.com
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WireGuard's socket.c calls udp_tunnel_xmit with the DF bit set to 0,
which means if the underlying endpoint's path has an MTU that is too
small, the UDP packet will simply be fragmented, not dropped.